5.2.17. The air consumption measuring instrument (Air flow sensor – AFS)

The air consumption measuring instrument with the heated thin film which micromechanical measuring system registers a stream of air and its direction.

The sensor of temperature of the air coming to the engine is built in the sensor of the measuring instrument of a consumption of air and represents a thermistor which resistance changes depending on temperature.

Check of the sensor

 PERFORMANCE ORDER

  1. Using an ohmmeter, measure resistance of the sensor of temperature of the air coming to the engine.
  2. Measure resistance between sensor socket plugs.
Temperature
Resistance, kOhm
0 °C
5,12–5,89
20 °C
2,29–2,55
40 °C
1,09–1,24
80 °C
0,31–0,37
  1. If resistance of the sensor differs from demanded, replace the sensor together with AFS.